table {
 border-width:1px; 
 border-style:solid; 
 border-color:black;
 cellpadding:5%
 border-collapse:collapse
 }
td { 
 border-width:1px;
 border-style:solid; 
 border-color:red;
 }
 .grise {
 border:1px solid black; 
 background-color:silver;
 }
.blue {
 border:1px solid blue; 
 }
.none {
 border-style:none;
 }  
 .vert {
 border-style:none;
 background-color:green;
 color: red;
 }